Comparable比较器

package leiku;

import java.util.Arrays;

class Book12 implements Comparable ///实现比较
{
private String title;
private double price;
public Book12(String title,double price)
{
this.title = title;
this.price = price;
}

@Override
	public String toString() {
		// TODO Auto-generated method stub
		return "书名"+this.title+"价格"+this.price+"n";
	}

@Override
public int compareTo(Book12 o) { //Arrays。sort() 会自动跳动此方法比较
	// TODO Auto-generated method stub
	if(this.price>o.price)
	{
		return -1;
	}
	else if(this.price 
}
 public class bijiaoqi {
 
public static void main(String[] args) {
	// TODO Auto-generated method stub
 
// int data[] = new int [] {1,4,5,7,8,9,2,3,10,6};
 // System.out.println(Arrays.binarySearch(data, 9));
 // Arrays.sort(data);
 // System.out.println(Arrays.binarySearch(data, 9));
 // int dataA[] = new int[] {1,2,3};
 // int dataB[] = new int[] {2,1,3};
 // System.out.println(Arrays.equals(dataA, dataB)); // false
 
// int data[] = new int [10];
 // Arrays.fill(data, 3);
 // System.out.println(Arrays.toString(data));
 Book12 books[] = new Book12[]
 {
 new Book12(“asda”,123),
 new Book12(“asdsdfa”,133),
 new Book12(“assfdsfda”,1223),
 new Book12(“asafasdfda”,13223)
 };
 Arrays.sort(books); ///对象数组排序
 System.out.println(Arrays.toString(books));
 
}
 
}